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Stels [109]
3 years ago
12

Algebra, pls help

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
6 0

Answer:

Product of 6 and a number would be 6x\\.

Nine more than a number? x/2 +9

Combine a number and 7? Either 7x or x + 7.

Step-by-step explanation:

Question 1 is relatively simple. 6 is a constant, so it can be inserted into any equation and maintain the same value. "A number" could represent anything, so we'll represent it with a variable. This gives you 6x (also 6*x)

Question 2 is the same as the first with 1 more step added to it. A number, as previously stated, is represented by the variable x. You divide this by the constant value of 2 to give you \frac{x}{2}. Nine more would add +9 to the expression. Your final answer would be \frac{x}{2} + 9.

Question 3. Combine is a bit vague, but it could be either addition or multiplication. This could give you either 7x or 7+x.

Hope it was helpful.

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A 10ft by 20ft rectangular swimming pool is surrounded by a walkway of uniform width. If the total area of the walkway is 216ft^
Dmitry [639]

check the picture below.


so, we know the dimensions of the pool, is a 20x10, so its area is simply 200 ft², and we know the walkway is 216 ft², so the whole thing, including pool and walkway is really 200 + 216 ft².


now, as you see in the picture, the dimensions for the combined area is 20+2x and 10+2x, since the walkway is "x" long, therefore,


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